Hanford, CA

California · Records since 1899–2026

🌙 82°F Feels like 78°
Currently in Hanford
As of 7:15 PM PDT

Records for September 26

🔥 Record High

105°F

September 26, 1963

+16° from 89° normal

❄ Record Low

35°F

September 26, 1948

-20° from 55° normal
🌞 Normal high: 89°F 🌑 Normal low: 55°F 1991–2020 normals

All-Time Records — Hanford

🔥
116°F
Hottest Day Ever
Jul 27, 1933
❄
14°F
Coldest Day Ever
Jan 7, 1913
🌧
2.70"
Wettest Day Ever
Feb 24, 2023
☃
0.0"
Most Snow in One Day
Jul 29, 2026

First & Last Dates — Hanford

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
356 days
Longest growing season
1995
152 days
Shortest growing season
1917
281 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 26

# Temp Date
🏆 105°F September 26, 1963
2 104°F September 26, 1919
3 100°F September 26, 2016
4 99°F September 26, 2022
5 98°F September 26, 2018
6 98°F September 26, 2009
7 98°F September 26, 1944
8 98°F September 26, 1917
9 98°F September 26, 1905
10 98°F September 26, 1899

Top 5 Record Lows — September 26

# Temp Date
🥶 35°F September 26, 1948
2 41°F September 26, 1911
3 41°F September 26, 1901
4 42°F September 26, 1916
5 44°F September 26, 1934
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1899–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Hanford

threshold: 104°F (90th percentile of historical Jun–Aug highs)
4.8
Avg heat wave length
days (historical)
108°
Avg peak temp
during heat waves
11
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1899–2026
111
2026 so far
101
Avg/year 1970–2025
121
Avg/year (last 10 complete)
144
Most in a year (1922)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Hanford

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 13, 1936 – Jul 26, 1936 14 112°F (Jul 23) 108°F 70°F
2 Jul 7, 1919 – Jul 20, 1919 14 108°F (Jul 8) 105°F 66°F
3 Jul 2, 2024 – Jul 14, 2024 13 113°F (Jul 6) 109°F 71°F
4 Jul 17, 1931 – Jul 28, 1931 12 115°F (Jul 25) 110°F 72°F
5 Jul 2, 1931 – Jul 13, 1931 12 112°F (Jul 4) 107°F 68°F
6 Jul 5, 1921 – Jul 15, 1921 11 111°F (Jul 7) 106°F 66°F
7 Jul 11, 1933 – Jul 21, 1933 11 110°F (Jul 14) 108°F 70°F
8 Jul 29, 1936 – Aug 8, 1936 11 110°F (Aug 6) 107°F 69°F
9 Aug 1, 2026 – Aug 11, 2026 11 110°F (Aug 9) 106°F 66°F
10 Jul 6, 1906 – Jul 15, 1906 10 111°F (Jul 7) 108°F 66°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

62
2026 total
above-normal nights
39.2
Avg / summer
1970–2020
73
Most in a summer
2024

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1899–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1899, annual totals have trended +0.13" per decade, about +1.6" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How Hanford is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

163 of 267 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

2.96"
2026 YTD
Normal: 5.67"
-2.71"
0.00"
September so far
September normal: 0.04"
-0.04"
0
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Hanford is 2.71" behind the normal pace

Period Review — Sep 18 – Sep 25, 2026

Any window, evaluated against every other year on record — 8 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
73.2°F
Average temperature
43rd-warmest of 115
+0.1°
vs. average
Normal: 73.2°F (1991–2020)

Average Temperature by Year — Sep 18 – Sep 25

1899–2026 · 2026 highlighted · trend +0.21° per decade (warming since 1899)

Precipitation by Year — Sep 18 – Sep 25

1899–2025 · 2026 highlighted · trend -0.01" per decade (drier since 1899)

Warmest Sep 18 – Sep 25 on Record

# Year Avg Temp
1 1922 84.3°F
2 1939 81.8°F
3 1919 80.3°F
4 1991 79.8°F
5 2002 78.8°F
6 1936 78.3°F
7 2009 77.7°F
8 2015 77.2°F
9 2011 77.1°F
10 1928 77.0°F

Coolest Sep 18 – Sep 25 on Record

# Year Avg Temp
1 1920 60.3°F
2 1941 63.5°F
3 1986 64.0°F
4 1948 64.1°F
5 2007 64.9°F
6 2017 65.8°F
7 2004 66.1°F
8 1978 66.5°F
9 1977 66.7°F
10 1972 66.9°F
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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